Test: adjust for devutils 2.0 compat

Author: kares

logstash-output-csv.gemspec

@@ -26,4 +26,5 @@ Gem::Specification.new do |s|
   s.add_runtime_dependency 'logstash-output-file'
   s.add_runtime_dependency 'logstash-filter-json'
   s.add_development_dependency 'logstash-devutils'
+  s.add_development_dependency 'insist'
 end

spec/outputs/csv_spec.rb

@@ -1,6 +1,7 @@
 require "csv"
 require "tempfile"
 require "logstash/devutils/rspec/spec_helper"
+require "insist"
 require "logstash/outputs/csv"
 
 describe LogStash::Outputs::CSV do